Fault detection and automatic recovery apparatus or write-read pointers in First-In First-Out
US5838895A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 15, 1997 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | May 15, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/003
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a fault detection and automatic recovery apparatus of write-read pointers in FIFO. While storing effective data in a register in writing performance, the apparatus does not unconditionally enable a FULL.sub.-- FLAG signal allotted to the register but confirms the relation of write-read pointers at that time and the EMPTY.sub.-- FLAG signal of a register at which the read pointer is situated and detects the error of FIFO. By selectively enabling the FULL.sub.-- FLAG signal of the register according to the result of detection, it automatically restores the FIFO functions without unnecessary re-initialization or the discontinuation of data transmission attributable thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.